Home / 306,601.13-422,747.58-209,851.59

Finding the Fourth Proportional to 306,601.13, 422,747.58 and 209,851.59

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Solution

The fourth proportional to 306,601.13, 422,747.58 and 209,851.59 is: 289,347.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,601.13 : 422,747.58 = 209,851.59 : x
  2. Step 2: Convert to fraction form
    306,601.13/422,747.58 = 209,851.59/x
  3. Step 3: Cross multiply
    306,601.13x = 422,747.58 × 209,851.59
  4. Step 4: Simplify right side
    306,601.13x = 88,714,251,831.65
  5. Step 5: Solve for x
    x = 88,714,251,831.65/306,601.13
  6. Step 6: Final answer
    x = 289,347.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.